181007 has 4 divisors (see below), whose sum is σ = 181896. Its totient is φ = 180120.

The previous prime is 181003. The next prime is 181019. The reversal of 181007 is 700181.

181007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 700181 = 313 ⋅2237.

It is a cyclic number.

It is not a de Polignac number, because 181007 - 2² = 181003 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a zygodrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 181007.

It is not an unprimeable number, because it can be changed into a prime (181001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32 + ... + 602.

It is an arithmetic number, because the mean of its divisors is an integer number (45474).

2¹⁸¹⁰⁰⁷ is an apocalyptic number.

181007 is a deficient number, since it is larger than the sum of its proper divisors (889).

181007 is an equidigital number, since it uses as much as digits as its factorization.

181007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 181007 is about 425.4491744028. The cubic root of 181007 is about 56.5672574674.

Adding to 181007 its reverse (700181), we get a palindrome (881188).

The spelling of 181007 in words is "one hundred eighty-one thousand, seven".